As Daniel, Lia, and Ayra walked through the long, dark tunnel, led by the colossal Golden-Armored Blue Ape, the air began to change. The heavy, cold feeling of the Yin region slowly started to fade, replaced by a faint, gentle warmth that seemed to seep in from the other end of the passage. The tunnel itself was a natural crack in the mountain, wide and tall enough even for the giant Ape to walk through without stooping. The only light came from the Ape's own golden fur, which cast long, dancing shadows on the stone walls.